#Question id: 570
#XL - Q Biochemistry
Which of the following is true for allosteric enzymes
#Question id: 2125
#XL - S Microbiology
The shortest alpha helix segment in a protein that will span a membrane bilayer has about _____ amino acid residues.
#Question id: 10676
#XL - T Zoology
For a pair of interacting species, increased specialization and decreased niche breadth in both species would result in
#Question id: 5281
#XL - S Microbiology
In the mating Hfr Strs met+ his+ leu+ trp+ Ala+ X F- Strres met- his- leu- trp- Ala-. At regular interval time, the mating cells are interrupted and the cell suspensions plated on four different growth media with streptomycin. The amino acids in the growth media and the number of colonies observed on each are as follows:
|
Interrupted time |
Composition of media |
Growth |
||||
|
His |
Leu |
Ala |
Trp |
Met |
||
|
2 min |
+ |
- |
+ |
+ |
+ |
Yes |
|
10 min |
+ |
- |
- |
+ |
+ |
Yes |
|
12 min |
+ |
- |
- |
+ |
- |
No |
|
15 min |
+ |
- |
- |
- |
+ |
Yes |
|
20 min |
- |
- |
- |
- |
+ |
Yes |
What is the order of transfer of the genes?
#Question id: 2654
#XL - T Zoology
Regulation of the lac operon can be envisioned as regulation of enzyme synthesis by its